Lock.



c. SANDFORD, s8.

LOCK. APPLICATION FILED MAY3I I9 l7- 1,250,027, Patented 1m. 11, 1917.

un rnn sTATEs r ATE Q H EQ CHARLES snnpronn, sa, or MADOC, o'uraizio, cannon, ASSIGNOR or QNEHALEI onms'rornnze nnivniijasolv, ori/LAn'oc; Durham, CANADA,

Loos.

looks and the object of'the invention is to devise a. simple and cheap form of lockin which all springs are dispensed with and yet which will operate freely and instantaneously and further-to provide means whereby the pull on the handle for opening the 'door will automatically operate to withdraw the bolt thereof and it consists essentially of the following arrangement'and construction of parts as hereinafter more particularly explained. I

Figure 1, 1s a perspect ve new of a door portion showing my lock applied thereto.

Fig. 2, is an enlarged vertical section on line a:y Fig. 1.

Fig. 3, is a sectional view on line my Fig. 2. v

Fig. 4, is an enlarged perspective detail of my lock removed from the door with the cover plate of the lock removed.-

Fig. 5, is a plan section on line 00 y Fig. 2. p w Fig. 6, is a detail elevation of a fragmentary portion of my lock showing the means for locking the bolt in the door locking position.

Fig. 7, is a modified form of my lock adapted for use as an automobile lock.

Fig. 8, is a sectional view on'line w 'y Fig. 7.

In the drawings like letters of reference indicate corresponding parts in'the various 1 indicatesa door frame 'and 2 a door whichis hinged at 3 to the door frame. 4

and '5 indicate escutcheon plates, which are secured to each face of the door 2 by's'crelws 6 and 7 8 indicates my lo ck,'which is fitted into the mortise 8 j'ections extending -'outwar dly from each es- .cuteheon p ate 4 and, 5, such projections be- Specification. Letters Batent. Pate t d Application filed min, 1917. Serial No.1'f2,0 23.,

martian.

i'ng provided with segmental circular upper portions 18 and 14 5 15 and '16aindicate lever members provided With segmental circular recesses 15 and 16*, which fit uponthe segmental circular portions -13"and1 l ,eacharc15 and 16 being shorter than the corresponding are l3 and 'le 'so as to allow of the free tilting movementof-the lever arm 15; and '16 in; a vertical plane, the projections 13* and 14* forming the fulcrum on which the lovers swing. l7 and '18 indicate'lugs which are substantially'U-shaped in cross section. 19 and 20 indicateha'ndlesprovided with 'lug portions 21 and 22 fitting into'the lJ-shaped lugs 17 and 18. The'lu'gs 21 and 22 are provided with 'orifices'28 in alinement withthe orifices 24 formed in the side portions the U-shaped lugs 17 and18. 1

25' indicates pins and .bolts extending through such alin'ed orifices whereby the handles 19'a'nd 20 are 'swingably connected to the lugs ll and 18. The lower portion of eachhandle: 1-9 and 20 is'pro'vided with a depending portion 26 in'alinement with its outer edgea-nd a depending portion 27,

which issegrnental circular in form in proximity to its inner edge and an interposed recess28 intervening between theprojecting "portions2'6 and27. Each lever-15 and 16 is provided "with an upwardly projecting hook-shaped portion 29 'fitting'into'a cortilting the lever "15 or 16 upwardly into the dotted position swinging around the projection 13* or '14 "as the case may be. By

the raising 'of the lever or :16 into the inclined position my lock is operated.

" I "will now describe the construction of '8 indicates the casing'of my lock ,8, the face platesof which are provided with "key orifices 3.0 and the'out'er face plate with a key orifice '31. 32 indicates a swingable member, supported upon the cross pin 33 r ed 1 .0m a e Pl t of the c s The member32 is provided with a normally horizontally extending portion 34 which "rests"upon-"the upper edges of the "levers 15 and 16, the upper face of the projecting portion 34 being inclined downwardly as indicated in Fig. 4 so asto permit of the upward swing of such member against the upper wall of the casing 8*. The member 32 is provided with a depending portion 35 having a slightly hooked end 36. 37 indithe inside of the door all that it is necessary to do is to turn the handle 47 to raise the arm 52 into the dotted position.

When it is desired to unfasten the latch lock from the outside of the door a suitable key is inserted through the key orifice 31, the

cates a latch bolt orifice of the casing. i 38 bit of the key being of such length as to en- 'indicates my latch bolt, which is provided with recesses 39 and 40. The rear or inner end of the latch bolt 38 is tapered at 41 as indicated, the recess 40 being located in such tapered portion.

In the drawings I have shown both the upper and lower edge of the bolt provided with recesses 39 and 40 so that the latch bolt may be made reversible to the right or left hand.

42 and 43 indicate flanges formed in the interior of the casing 8 the flange 42 being slightly inclined upwardly from the outer wall of the casing and the flange 43 inclined upwardly substantially parallelto the tapered portion 41 of the latch bolt 38; 44 indicates a ball held in the recess 39 upon the flange 42.v 45 indicates a ball held in the recess 40 upon the flange 43.

\Vhen the handle 19 or 20 of the door is pulled as above described and one of the levers 15 or 16 is thrown into the tilted position indicated by dotted lines in Fig. 2 the member 32 is raised by such tilted lever into the dotted position shown in Fig. 4 thereby drawing the latch bolt 38 into the dotted position by means of'the engaging hook 35 engaging the upper recess 40. When the handle of the door is released the parts assume their normal position by means of gravity, the balls 44 and 45 rolling down the inclined flanges 43 and 42 from the dotted position shown in this figure back to their normal or full position and thereby carrying the latch bolt 38 so as to project through the orifice 37 to latch the door.

In order to provide a latch lockforthe door the ratchet shaped recess 46 is formed in the upper edge of the latch bolt 38. 47 indicates the handle of the latch lock, such handle being provided with a rectangular tongue portion 48 extending inwardly into the casing of the lock. 49 indicates a cylindrical slotted rocking member turnaloly held in circular orifices 50 formed in the face plates of the lock casing 8 and into which the tongue 48 extends. 51 indicates aratchet shaped tooth extending outwardly from such cylindrical portion toward the key orifice 31. 52 indicates an arm extending outwardly from such rocking member and normally resting upon the upper edge of the latch lock 46. The lower face of the arm 52 is provided with a ratchet-shaped projection 53, which fits in its locking position into the ratchet recess 46.

When it is desired to free the latch from recess 59.

gage the projection 51 as the key is turned in the direction indicated by arrow (see Fig. 4). By this means the arm 52 is raised into the dotted position before described so as to free the projection 53 from the notch 46 thereby allowing the latch bolt to be withdrawn. 1

In order to permanently lock the latch lock in position so that it can be'released by key operated means only, I have provided the following mechanism.

54 indicates a rib extending across the lower wall 55 of the casing 8 in proximity to the key orifice 30. e 56 indicates a flange extending outwardly from one of the side plates ofthe lock casing 8 and set at an incline. 57 indicates a locking member comprising a plate portion 58 fitting against the inner face of one of the face-plates of the lock and provided in its lower edge with -a 60 indicates a head which is formed integral with the lower portion of the plate-58 and normally fits between the inclined flange 56 and-rib 54. 61 indicates a cross groove formed in the lower face of the head in proximity to thecross rib 54.}-

62 and 63 indicate projections, which form the wards of the lock co-acting with the key. When the key is inserted through the key orifice 30 and turned in the direction of arrow the outer edge of the bit of the'key engages with the upper portion of the recess 59 thereby giving an upward and rearward lift to the plate 58 carrying'the upper portionthereof into such a position as to be inserted between the rear end of the latch groove 61 is carried clear of the rib 54. As. the key is swung in the opposite direction to the arrow it engages the edge of the recess in proximity to thepoint X carrying the plate 58in the direction of the arrow (see Fig. 5) so that the head 60 is carried back to its normal position between ,the flange 56 and rib 54.

In order to further lock the plate 58 in position the member 62 is swingably earried by such plate, such member being provided with an annular portion 63 swung upon a pin 64: extending outwardly from the plate 58. The lower edge of the member 62 is provided with a curved recess portion 66 with which the key inserted in the slot 30 also engages when it is turned in the opposite direction to the arrow so as to carry the plate 58 from its locking position.

'After the plate 58 has been raised during the unlocking operation as above described the key engages the recess 66 swinging the locking member 62 upwardly clear of the flange 56 thereby permitting of the free return movement of the head 60. When the plate 58 is carried to the locking position the member 62 drops into the position shown in Fig. 5 so that the free end thereof engages with the end edge 56 locking the parts in position.

Referring to Figs. 7 and 8. 70 indicates the casing of the lock provided with the usual face plate in which is located a bolt orifice. 72 indicates an inclined way formed in the bottom of the casing 70. 73 indicates a slot formed in one side wall of the casing and 74 indicates a lug extending upwardly from the casing and provided with a bearing orifice 75. 76 indicates a substantially triangular shaped weight member having inclined faces 77 and 78 set at different levels and a downward projection 79. vided at its upper edge with an inclined face 81 opposing the inclined face 78 and an inclined face 82, which opposes the lower portion of the inclined face 78 below the projection 79 and the upper portion of the inclined face 77.

83 indicates a projection extending upwardly from the inner end of the bolt member, the upper portion being reduced so as to enter a recess in the weight member 76 indicated by dotted line 84. 85 indicates an upwardly extending projection also extending from the bolt member and normally in proximity to the face plate 71. The upper end of the projection 85 is designed to enter into a recess in the weight member 76 indicated by dotted line 87 when the bolt is withdrawn.

88 and 89 indicate arc-shaped recesses formed in the lower end of the bolt member and 90 indicates a ball fitting into the re cess 88 and resting upon the bottom of the lock casing 70. 91 indicates a ball fitting into the recess 89 and resting upon the in- 80 indicates a bolt member pro-' clined way 72 and 92 indicates a ball fitting between the inclined faces 78 and 81 and 93 indicates a ball fitting between the inclined faces 77 and 82. 94 indicates the operating lever provided with a pin 95 journaled in the orifice 75 and a pin 96 extending through the slot 73 into an orifice 97 formed in the lock member 80. 98 indicates the handle of the operating lever.

When it is desired to operate the look all that it is necessary to do is to raise the handle 98 thereby swinging the operating lever so as to carry the pin 96 rearwardly thereby carrying the bolt member 80 in the same direction withdrawing the bolt. During this movement the ball 90 rolls upon the lower wall of the casing and the ball 91 up the incline 72. Simultaneously the balls 92 and 93 roll between the opposing faces 81 and 78 and 82 and 77 into the position shown by dotted lines in Fig. 7 raising the weight member 76 to the dotted position. As soon as the handle 98 is released the Weight member carried by the bolt member serves to force the bolt back to its normal or locked position or the position shown in full lines in the drawings.

From this description it will be seen that I have devised a lock which entirely operates by gravity, the latch bolt thereof being carried by ball bearings allowing the free return movement of the latch lock to the 3 locking position after the handle is released, and in which simple latch locking means are provided for whereby the latch lock may be temporarily locked in position so as to be easily opened from the inside of a door and also means whereby the lock may be permanently locked in position so that it can only be opened by key operated means from either sideof thedoor.

What I claim as my invention is.

In a lock, the combination with the lock casing having the latch bolt orifice, of a latch bolt, flanges inclined to the plane of movement of the bolt supported within the casing, balls interposed between the lower edge of the latch bolt and the inclined flanges, and means operated from the exterior of the latch casing for withdrawing the bolt in slidable engagement with the balls. 7

CHARLES SANDFORD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, 1)v 0. 

